Jo-Wilfried Tsonga needed five sets to get past Canada's Denis Shapovalov, while world No. 3 and ATP Tour finals champion Grigor Dimitrov scraped through against American qualifier Mackenzie McDonald.

The Bulgarian emerged victorious after winning the fifth set 8-6 in a match lasting nearly three-and-a-half hours.

Kournikova serves up twins

Anna Kournikova used to attract more headlines off the court than on it during her playing days, making millions of dollars from advertising campaigns and becoming one of the most common searches on the internet.

Things have quietened down in recent years, but news that she and her pop star partner Enrique Iglesias welcomed twins into the world last December caused a spike in search traffic.

And on Tuesday, both she and Iglesias shared images of the twins on their Instagram accounts, prompting an slew of congratulatory messages for the post which Kournikova simply called: "My Sunshine."

Kaepernick set to complete $1M pledge

From homeless people and single mothers to immigrants and families affected by violent crime, Colin Kaepenick's pledge to raise $1 million for oppressed communities has been honored, the ex-San Francisco 49ers quarterback has announced.